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Official data from INPI

UM PROCESSO PARA PREPARAR CONTINUAMENTE POLIAMINAS AROMÁTICAS COM CATALISADORES DE RESINA DE TROCA IÔNICA

Em AnáliseInvention Patent

Application data

Number

PI8507307

Type

Invention Patent

Filing

11/12/1985

Publication

12/01/1987

Progress at the INPI

  1. Filing11/12/85
  2. Publication12/01/87
  3. Examination03/01/88
  4. Allowance01/08/91
  5. Grant09/24/91
  6. Terminated08/15/95

The patent was granted on 09/24/1991 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 03/01/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

See this company's full portfolio

Inventors

I. J. (pessoa física)

US

J. N. (pessoa física)

US

L. R. (pessoa física)

US

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

03/01/1988

RPI 906

Notificação de entrada na fase nacional - PCT

#1.3

12/01/1987

RPI 893

Anuidade - prazo legal encerrado

#18.2

08/15/1995

RPI 1289

Concessão da patente

#16.1

09/24/1991

RPI 1086

Republicação - classificação IPC

#15.11

07/02/1991

RPI 1074

Notificação para pagamento de retribuição

#13.1

06/18/1991

RPI 1072

9.1.3

03/05/1991

RPI 1057

Deferimento

#9.1

01/08/1991

RPI 1049

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